Snow-plow.



J. W. MOWBRAY.

snow PLOW. APPLICATION FILED MAR- 20, 1907.

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rub: NQRRIS PETERS so No; 858,616. PATBNTED' JULY 2, 1907. J. w. MOWBRAY..

snow PLOW.

APPLIQATION FILED MAR. 20, 1907.

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JAMES WILLIAM MOWBRAY, OF STRATFORD, ONTARIO, CANADA.

SNOW-PLOW.

Specification of Letters Patent.

Patented July 2, 1807.

Application filed March 20, 1907. Serial No. 363,330.

To all whom it may concern:-

Be it known that I, JAMEs WILLIAM MOWBRAY, of the city of Stratford, in the county of Perth, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Snow-Flows, of which the following is the specification.

My invention relates to improvements in snow plows and the object of the invention is to provide an effectual means to cut or sever the snow bank, so as to free the portion of the snow to be lifted before the snow starts to rise on the sloping scoop of the plow.

A further object is to so construct the plow that the snow when out and raised may be delivered at the height of the snow bank or drift without necessity of it being carried to the top of the share and thereby effectually overcome the resistance of the snow at the earliest possible moment.

A still further object is to provide means when the bank of snow is primarily cut off to prevent it from falling down between the drift or bank of snow and the plows which formerly had a tendency to fill up the track during the forward movement of the plow.

Still further objects are to provide an effectual means for clearing the ice or frozen snow from the inside of the tread of the rail, which ice or snow frequently results in derailing the snow plow, and to prevent the snow from climbing up beyond the shares and being precipitated on to the top of the plow and finally on to the top of the engine.

To effect these objects I have constructed and arranged my invention with a sloping scoop flaring out-,

wardly at each edge toward the rear and upper end, cutting knives arranged with their front edges on a vertical plane and flaring outwardly from bottom to top so that they lie in the same plane, and therefore immediately in front of the flaring edges of the sloping scoop, a cross bridge connecting the knives and a horizontally disposed plate extending rearwardly to the cupola above the share and divided centrally immediately above the center of the converging share, and concave-convex cutting disks located on the ends of the bent axles supported on a suitable frame and having their cutting edges located in proximity to the inner tread of the rail, the parts being arranged and constructed in detail as hereinafter more particularly explained.

Figure 1, is a perspective view of the forward portion of my snow plow, a portion being broken away and a portion in section so as to exhibit all the parts involved in my invention. Fig. 2, is a front elevation. Fig. 3, is a plan view of the front portion of the snow plow with the cupola removed. I

In the drawings like letters of reference indicate corresponding parts in each figure.

A is the main body of the snow plow and B the converging shares. C is the upwardly sloping scoop and D the upper extension of the scoop C on each side of the shares B. The side of the scoop O flares outwardly at C on each side that is to say narrower at the front and wider at the rear. The extension on each side of the share B runs parallelly to the side of the track or on a line with the side of the car.

E are cutting knives, which are designed to sever the snow to be raised from the bank of snow or drift. The front edge of the cutting knife is on a vertical plane at right angles to the track surface, but the knives flare outwardly laterally from the bottom to top and are wider apart at the bottom than at the top. The outward flare of the knives is so arranged that the plane of the knives is co-incident with the plane of the flaring sides of the scoop as will be understood on reference to Fig. 2, so that the snow is cut or severed with outwardly inclined walls at each side. The knives are connected to the sloping scoop by the angle brackets E. The tops of the knives are connected together by the angle iron cross bridge F having the depending sides F .to which the tops of the knives E are connected.

G G are plates formed in two portions, which are cut away to form an orifice G at the front. The front of the plates G are connected to the bridge F and the back is secured to the angle bar H and underneath the cupola I at the back of the orifice G the plates G are bent down, wardly, so as to have a downward flare G, immediately in front of the point of converging of the shares B. This flaring G of the plate is designed to throw the snow downwardly to the shares. 7

.I is a frame having the side bars J 1 pivotally connected at the front to a bracket J underneath the front portion of the sloping scoop of the plow. The back bar J of the frame J is bent outwardly at J and has a stud axle J 5 secured thereto upon which is journaled the concavo-convex disk J the convex side of which is outermost and is designed to run in proximity to the inner tread of the rail. This concave-convex disk I find in practice effectually severs or breaks up the ice on the inner tread of the rail, which would interfere with the free running of the flange and consequently obviate any liability of the plow being derailed. In practice I find that it is not necessary to even adjust this disk as has been necessary where other forms or scrapers have been employed I connect the frame J at the rear by the toggle-jointed bars J to the bottom of the sloping scoop and I also provide a U-shape bar J to the center of the togglejointed bars J 4 and to the center of the bar J I connect a rod J whichmay be connected at the rear to a lever. By this means the disks J may be raised when desired.

It is particularly noted in my invention, that I leave the sides of the plow perfectly open on each side of the sloping scoop except only in that portion where the knives are placed. Which is at the front. I am hereby enabled to get rid of the snow immediately it passes the knives E and therefore, if the drift be low or high it will pass off the sloping scoop immediately above the height l of the drift or bank and not necessitate carrying the snow up to the full height of the scoop, which would in other forms where the plow is closed in at the sides of the scoop, cause a greater resistance to the forward movement of the plow and consequently more power to drive the same.

In my invention it will be also noticed that as the plow approaches the snow the bank is severed at each side practically prior to its rising on the scoop, which is an important desideratum for the reason that in other terms where the knives slope rearwardly the snow rises on the scoop before it is severed and consequently the plow has to raise a greater volume of snow from side to side, which necessitates greater power. I must also point out the importance of having the knives at the Iront flare outwardly, by this construction I am enabled to form a clearance for the snow as it passes up onto the scoop, it being of course understood that the walls of the banks of snow increase in width from the track upward.

What I claim as my invention is:

1. In a snow plow, the combination with the car body and the front sloping scoop, and the converging plow share located at the upper end thereof, of cutting knives secured at the bottom front edge of the scoop and extending upwardly from the same and having their front edges on a vertical plane extending cross wise of the track and at right angles to the plane of the same, such edges flaring outwardly laterally from the bottom to top as and for the purpose specified.

2. In a snow plow, the combination with the car body and the front sloping scoop having the sides thereof, tlar ing from the bottom and front to the top and rear, and the converging plow share centrally disposed at the upper end of the scoop, of the cutting knives secured at the bottom to the front? of the scoop and extending up wardly and flaring so that the plane of the knives are on the same plane as the ouhvardly llaring side edges of the scoop as and for the purpose specified.

3. In a snow plow, the combination with the car body and the front sloping scoop having the sdies thereol, tlaring from the bottom and front and rear of the cutting knives secured at the bottom to the front of the scoop and extending upwardly and flaring outwardly, so that the knives are on the same plane as the outwardly tlaring sides of the scoop as and for the purpose speeilied.

4. in a snow plow, the combination with the body and front sloping scoop, and the knives secured at the bottom of the front of the scoop and extending upwardly, and the bridge connecting the upper ends of the knives, ol' the plates connected to the top above the plow shares and to the bridge and having an opening in the front. and centrally divided so as to form tlaring wings immediately in front and above the converging tront edges of the shares as and for the purpose specified.

In a snow plow, the combination with the plow and body thereof, 01 a frame adjustably supported under the front of the plow and having deflecting axle ends and concave convex openings journaled on the axle ends and designed to have convex sides contact with the inner edge of the tread rail as and for the purpose specified.

Witnesses B. Born, A. (,llllGlI'llUN. 

